Synopsis Summary for Episode 5 of Brain

Seo Joon Suk is officially appointed as assistant professor. Usury repeatedly comes to collect the debt repayment, usury debt collection, mother of Lee Kang Hoon is tortured. After been appointed, Seo Joon Suk officially starts his duty. Because of failing in competition for the job, Lee Kang Hoon plans to do some action on Seo Joon Suk to revenge his humiliation. Yoon Ji Hye hopes to help reducing conflict between Lee Kang Hoon and Seo Joon Suk.

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